(0 20 1)(2 21 19 17 13 10 4)(3 9 5)(6 14 11)(7 16 8)(12 18 15)
ALLOWS (11/8)-SEQUENCE
1: (0 7 16)

(0 8 7 20 1)(2 21 19 17 13 10 4)(3 9 5)(6 14 11)(12 18 15)(16)
2: (2 21 13)

(0 8 7 20 1)(2 10 4)(3 9 5)(6 14 11)(12 18 15)(13 19 17)(16)(21)
3: (12 18 15)

(0 8 7 20 1)(2 10 4)(3 9 5)(6 14 11)(12)(13 19 17)(15)(16)(18)(21)
4: (1 7 20)

(0 8 7)(1)(2 10 4)(3 9 5)(6 14 11)(12)(13 19 17)(15)(16)(18)(20)(21)